从多个线程调用时 Thread.sleep() 如何工作
sleep() 是 Thread 类的静态方法.从多个线程调用时它是如何工作的.以及它如何确定当前的执行线程.?
sleep() is a static method of class Thread. How does it work when called from multiple threads. and how does it figure out the current thread of execution. ?
或者可能是一个更通用的问题是如何从不同的线程调用静态方法?不会有并发问题吗?
or may be a more generic Question would be How are static methods called from different threads ? Won't there be any concurrency problems ?
推荐答案
它是如何计算出当前的执行线程?
how does it figure out the current thread of execution?
没必要.它只是调用操作系统，而操作系统总是让调用它的线程休眠.
It doesn't have to. It just calls the operating system, which always sleeps the thread that called it.
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